/*
 * DBeaver - Universal Database Manager
 * Copyright (C) 2010-2020 DBeaver Corp and others
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jkiss.dbeaver.lang.sql.model;

import org.eclipse.jface.text.rules.IToken;
import org.jkiss.code.NotNull;
import org.jkiss.code.Nullable;
import org.jkiss.dbeaver.lang.SCMCompositeNode;
import org.jkiss.dbeaver.lang.SCMSourceScanner;

/**
 * Source code node
 */
public class SQLStatementSelect extends SQLStatementAbstract {

    public SQLStatementSelect(SCMCompositeNode parent) {
        super(parent);
    }

    @Override
    public String toString() {
        return ">>SELECT ";
    }

    @Nullable
    @Override
    public IToken parseComposite(@NotNull SCMSourceScanner scanner) {
        IToken lastToken = parseSelectExpression(scanner);
        if (lastToken != null && lastToken.isEOF()) {
            return lastToken;
        }
        return null;
    }

    private IToken parseSelectExpression(SCMSourceScanner scanner) {
        for (;;) {
            IToken token = scanner.nextToken();
            if (token.isEOF()) {
                break;
            }
        }
        return null;
    }
}
